Cite

Introduction (possibly by Chou I-min, Acton’s teacher)

MLA

Acton, Harold, 1904-1994. Introduction (possibly by Chou I-min, Acton’s teacher). Box 1, folder 1. 1933 1941. https://collections.library.yale.edu/catalog/16604499.

APA, 6th edition

Acton, Harold, 1904-1994. (["Box 1, folder 1"])(1933 1941)[Introduction (possibly by Chou I-min, Acton’s teacher)]. https://collections.library.yale.edu/catalog/16604499.